FOUND BY THE ARCTIC VOYAGERS. 4l 
Spores minute, hyaline, elliptic, 4-535 of an inch long. Nuclei ob- 
solete. 
This has larger spores than P. inophila, and their outline is elliptic 
and not oblong. Besides this and the foregoing species, I find in the 
cracks, on the medullary rays, what I take to be Coniothyrium glomera- 
tum, Corda. 
4. Phoma epileuca, n.s.; maculis indeterminatis ; peritheciis elonga- 
tis; sporis hyalinis majoribus oblongis enucleatis. 
Has. On bleached Pine planks. Woodnewton. Dec. 1851. 
Perithecia black, minute, elongated, following the direction of the 
fibres. Spores perfectly colourless, oblong, «455 of an inch long, 
sometimes slightly broader at one extremity, without any definite 
nuclei. 
Distinguished from P. fibricola by its hyaline spores. 
5. Phoma fibricola, n. s.; maculis indeterminatis ; peritheciis minutis 
elongatis; sporis ovatis ellipticisque viridulis. 
Has. On planks of Ash and Oak and Elm, amongst the bleached 
fibres. King’s Cliff. Nov. 1851. 
Perithecia mostly scattered, but sometimes forming distinct groups, 
elongated, following the course of the fibres. Spores ovate or subel- 
liptic, larger than in most species, 43y of an inch long, of a delicate 
olive-green, without any distinct nuclei. 
The spores in the specimens on Ash, of which the measure is given 
above, are rather larger than in those on Oak, but there is no other dif- 
ference, This is not a true Phoma according to M. Desmaziéres’ defi- 
nition of the genus, which I am however inclined to think too restricted, 
and which indeed does not tally with all his published species. a 
6. Phoma bicuspidata, n. s.; maculis indeterminatis ; peritheciis 
elongatis ;' sporis majoribus utrinque apiculatis hyalinis binucleatis. - A 
Has. On Pine-wood. Woodnewton. Dec. 1851. B 
Perithecia elongated, black, minute, following the direction of the 
fibres, at first scattered, at length often confluent. Spores 3399 of an 
ineh long, shortly fusiform, apiculate at either end, variable in size and 
in the degree of acumination, hyaline, containing two nuclei ; peated on 
slender sporophores. wis É 
This is at first a very evident Phoma, with a distinctly cellular peri- 
thecium. At length the perithecia are often confluent and confused 
with a minute Tubercularia, and the production in — n 
VOL. V. " 
